USGS Loc. 20001 (Unit 2) - ridge between Candelaria and Río Ciruelas (Miocene to of Costa Rica)

Where: Costa Rica (10.0° N, 84.3° W: paleocoordinates 9.3° N, 82.3° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Early/Lower Miocene to Early/Lower Miocene (23.0 - 11.6 Ma)

• "Early or Middle Miocene is the best that can be done with the mollusks from the locality near Turrucares." (pg. 496)

• bed-level stratigraphic resolution

Environment/lithology: offshore; fine-grained sandstone and sandy siltstone

• Fine-grained sandstone and foraminiferal sandy siltstone.

Size class: microfossils

Collected by Malavassi in 1957; reposited in the USNM

• COLLECTOR: E. Malavassi V, 1957. REPOSITORY: USNM.

Primary reference: W. P. Woodring and E. Malavassi V. 1961. Miocene Foraminifera, Mollusks, and a Barnacle from the Valle Central, Costa Rica. Journal of Paleontology 35(3):489-497 [N. Bonuso/P. Monarrez]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 143215: authorized by Nicole Bonuso, entered by Pedro Monarrez on 20.04.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Rotaliina
 Buliminacea - Siphogenerinoididae
 Buliminacea - Uvigerinidae
 Buliminacea - Buliminidae
 Nonionacea - Nonionidae
 Rotaliina - Bolivinidae
Bolivina marginata Cushman 1918
var. multicostata
 Globigerinaceae - Globigerinidae
 Globigerinina - Hedbergellidae
Lagenina
 Nodosariacea - Nodosariidae
Frondicularia sp. Defrance 1824
Robulus sp. Montfort 1808
Saracenaria sp. Defrance 1824
Plectofrondicularia
  -